PlantSea Ltd | Liverpool Science Park | £30,000 FTE (£18,000 actual)
3 days per week, office-based
About PlantSea
PlantSea is a materials science company developing a seaweed-based biopolymer as a plastic-free, biodegradable alternative to PVOH, the film used in laundry capsules and dishwasher tablets. The company operates from Liverpool Science Park and the OpTIC Technology Centre in St Asaph, with a team of around 15, and is supported by impact investors.
The role
PlantSea is building its marketing function and is looking for a part-time Marketing Executive to deliver day-to-day activity across social media, events and campaigns. This is a broad, hands-on role in a growing sustainability business, working three days per week from our Liverpool office.
The Marketing Executive will report to [name, title] and work closely with the commercial team, R&D and external agency partners.
Key responsibilities
- Plan, create and schedule content for PlantSea’s social media channels, with a focus on LinkedIn, and report on performance
- Coordinate PlantSea’s presence at trade shows, conferences and industry events, including logistics, materials and follow-up
- Support the planning and delivery of marketing campaigns and announcements, from brief to evaluation
- Write and edit copy for newsletters, case studies and sales materials
- Maintain brand consistency across all channels and materials
- Manage marketing contacts and campaign data in the CRM, working closely with business development
Some flexibility on working days will be needed around events and trade shows.
Essential experience and skills
- Some experience in marketing, communications or a related role, through employment, a placement or internship
- Confident managing social media for a business, with an understanding of what works on LinkedIn
- Excellent writing skills and a good eye for detail
- Strong organisational skills, with the ability to manage several projects and deadlines at once
- Comfortable with design tools such as Canva and with standard productivity software
- Willingness to travel to events in the UK and occasionally overseas
- A genuine interest in sustainability and the reduction of plastic in consumer products
Desirable
- A degree in Marketing, Communications, Business or a related field, or equivalent practical experience
- Experience of B2B marketing, ideally in FMCG, packaging or a technical sector
- Event coordination experience
- Familiarity with CRM systems or email marketing platforms
- Basic photography or video editing skills
Benefits
- Company pension scheme
- 31 days’ holiday per year, pro rata
- Eligibility for EMI share options
How to apply
Please send a CV and covering letter to recruitment@plantsea.co.uk by 31st October 2026.